The present disclosure provides an air conditioner capable of improving user convenience because a ventilation mode in which heat exchange between indoor air and outdoor air is performed and a ventilation mode in which the heat exchange is not performed are selectable by a user and a controlling method of the air conditioner. To this end, the air conditioner includes an indoor introduction air path configured to introduce air into an indoor space and an outdoor discharge air path configured to discharge air to an outdoor space, wherein the outdoor discharge air path includes an air path in which heat exchange is performed with the air introduced into the indoor space, and a by-pass path in which heat exchange is not performed with the air introduced into the indoor space, and the air conditioner further includes a controller configured to control the air discharged to the outdoor space so that the air discharged to the outdoor space flows to one of the air path, in which the heat exchange is performed, and the by-pass path.

The present disclosure relates to a climate management system having a control system configured to control climate characteristics of a building. The control system further includes a memory device and a processor. The memory device includes instructions that, when executed by the processor, cause the processor to receive, via a sensor, data indicative of an evaporator coil temperature of the climate management system, and operate an air mover of the climate management system to control supply of conditioned air to the building based on the evaporator coil temperature.

The present invention relates to controlling the treatment of air for the inside of a building and especially to controlling a hybrid air conditioning system for the regulation of the air temperature and humidity which utilizes outside air to enhance the efficiency of the system and which has a smoke evacuation system to enhance the safety of firemen and occupants when there is a fire or smoke hazard in the building.

A district energy system includes at least one energy provisioning unit, an energy management controller; a thermal distribution network coupled to the energy provisioning units and to a plurality of coupling interfaces connectable to the associated HVAC system of buildings within a district, and an electrical distribution network coupled to the energy provisioning units and to the coupling interfaces. The coupling interfaces may include both heat pumps and heat exchangers at each building, to provide heating, cooling and enable harvesting of normally wasted thermal energy from the buildings for re-distribution. The controller can manage the selection and number of energy provisioning units (and their operational set points) coupled to the district thermal distribution network and the electrical distribution network to meet the thermal and electrical demands of the district while satisfying other operational goals such as the minimization of greenhouse gas emissions.

Example embodiments of the present disclosure relate to a heat pump including a system or method for detecting a fault in the heat pump. Some embodiments include a method for detecting a switch over valve fault where the heat pump includes a refrigerant cycle, a compressor, a first heat exchanger, a second heat exchanger, and a switch over valve, and the method includes operating the HVAC system in one of a heating mode or a cooling mode, monitoring first, second, and third refrigerant parameters associated with the refrigerant circuit using first, second, and third refrigerant sensors, determining first and second refrigerant inputs based on the first, second, and third second refrigerant parameters, and determining a refrigerant circulation mode by comparing the first refrigerant input to the second refrigerant input to provide an indication of whether the refrigerant is circulating in the heating mode or the cooling mode.

A controller controls a first air-conditioning system and a second air-conditioning system having separate refrigerant circuits, but arranged for conditioning a common space. The controller includes a multi-variable regulator to determine control signals for controlling operations of first components of the first and the second refrigerant circuits to reduce jointly and concurrently an environmental error between setpoint and measured values of environment in the common space. The controller also includes at least two single-variable regulators to receive operational errors between setpoint and measured values of an operation of a second component of the first and the second refrigerant circuits. The controller separately determines control signals for controlling the operation of different refrigerant circuits that reduce the operational errors. The controller also includes a lookup table that stores values for other inputs of the systems that improve its performance, and which selects specific input values for both systems according to the outputs of the multi-variable and/or single variable regulators. The controller includes an electrical circuit for controlling the first and the second air-conditioning systems according to the determined control signals.

A gas sorption system for removal of moisture, carbon dioxide, ammonia, hydrogen sulfide, volatile organic compounds or mixtures thereof from air includes a main sorption unit; a main process air circuit arranged to conduct a main process airflow through a main sorption rotor in the main sorption unit; a main regeneration air circuit arranged to conduct a main regeneration airflow through the main sorption rotor in the main sorption unit; and a purge air circuit arranged to conduct a purge airflow through the main sorption rotor in the main sorption unit, the purge airflow being configured to flow through the main sorption rotor in the same direction as the main regeneration airflow. A pre-processing unit is connected to the main regeneration air circuit upstream of the main sorption unit and is arranged to heat and/or to dehumidify the main regeneration airflow upstream of the main sorption unit.

Systems and methods for controlling conditions in an enclosed space, such as a data center, or for providing cooling to a device, can include using a Liquid-to-Air Membrane Energy Exchanger (LAMEE) as an evaporative cooler. The LAMEE or exchanger can cool water to the outdoor air wet bulb temperature in a cooling system disposed outside of the enclosed space or device. The reduced-temperature water can be delivered to the enclosed space or device or can cool a coolant that is delivered to the enclosed space or device. The air in the enclosed space, or one or more components in the enclosed space, can be cooled by delivering the reduced-temperature water or coolant to the enclosed space, rather than moving the supply air from the enclosed space to the cooling system. In an example, the cooling system can include one or more cooling coils, upstream or downstream of the LAMEE.

An example system is configured to control conditions in an enclosed space. The system includes scavenger and process plenums, a liquid-to-air membrane energy exchanger (LAMEE), a first liquid-to-air heat exchanger (LAHX), a second LAHX, and a fluid circuit The scavenger plenum is configured to direct scavenger air from a scavenger inlet to a scavenger outlet. The process plenum is sealed from the scavenger plenum and is configured to direct process air from a process inlet to a process outlet The process inlet receives heated air from the space and the process outlet supplies cooled air to the space. The LAMEE is arranged inside the scavenger plenum. The LAMEE is configured to use the scavenger air to evaporatively cool a first fluid flowing through the LAMEE. The temperature of the first fluid at a LAMEE outlet is lower than the temperature of the first fluid at a LAMEE inlet. The first LAHX is arranged inside the process plenum. The first LAHX is configured to directly and sensibly cool the heated air from the space to a supply air temperature using a second fluid flowing through the first LAHX. The second LAHX is arranged inside the scavenger plenum downstream of the LAMEE. The second LAHX is configured to receive and cool the second fluid heated by the first LAHX using the scavenger air. The fluid circuit transports the first and second fluids among the LAMEE, the first LAHX, and the second LAHX.

A heat pump system includes a main heat pump system, a heat retaining layer and a reflecting layer coated on an partial inner surface of a building, a directly expanded strong cool-heat radiation plate having a distance from the reflecting layer, a heat radiating layer located at a side of the directly expanded strong cool-heat radiation plate and having a distance from the directly expanded strong cool-heat radiation plate, a buffer plate disposed between the heat radiating layer and the directly expanded strong cool-heat radiation plate, an anti-condensation trough disposed below the directly expanded strong cool-heat radiation plate. A sealed cavity is enclosed by the heat radiating layer and a wall surface, and the wall surface is formed by a combination of the partial inner surface of the building, the heat retaining layer and the reflecting layer, and, the sealed cavity is filled with air.